Adam lungen



(No Model.)

A. LUNGEN.

ELECTRIC BELL. No. 393,710. Patented New. 27, 1888...

UNITED STATES PATENT OFFICE.

ADAM LI INGEN, OF NEW YORK, N. Y.

ELECTRIC BELL.

SPECIFICATION forming part of Letters Patent No. 393,710, dated November 27, 1888.

Application filed November 21, 1887. Serial No. 255.703.

T 0 all whom it may concern:

Be it known that l, ADAM LT'INGEN, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Electric Bells, of which the following is a specification.

My invention relates to an improvement in electric bells, and more'particularly to the construction of the vibrating armature in such bells; and it consists in so forming the softiron armature with turned-over or crimped edges, so that it will clamp and attach itself to the supporting-spring and to the striking-hammer of the bell without the aid of screws or rivets; and it furthermore consists in the particular construction of the frame or base upon which the several parts of the bell are mounted, all of which will be hereinafter more fully set forth.

In the accompanying drawings, Figure 1 is a top View of a bell embodying myiuvention. Fig. 2 is a side view of the same. Fig. 3 is a detached view of the armature. Fig. 4 is a section through the armature on line a: a: of Fig. 1. Fig. 5 is a similar view on line y y of Fig. 3. Fig. 6 is a detached view of the spring used to return the armature to its normal position, and Fig. 7 illustrates a modification in the method of mounting the armature.

A is the base or frame, and is preferably made of stamped metal in the form shown that is, with a longitudinally-projecting arm, a, adapted to support the bell B,and upwardlyprojecting lugs or arms 0 and D, to supportthe several parts hereinafter described. This base A has formed aroundits edgea lip or bead, A, to give it the required stiffness, so that it may be stamped out of comparatively thin metal. The upwardly-projecting lug O is made to support a bindingpost, E, and two electro-magnets, F F, the electric connection being from the binding-post E to and through the coils of the electro-magnets and to the base A, and the lug D is made to support the vibrating armature G and contact bearing arm H. the former being so mounted as to be in electrical contact with the base A and thelatter being insulated therefrom but secured thereto by the bindingpost I.

The vibrating armature is formed as shown in Figs. 3, 4, and 5, there being a piece of soft (No model.)

iron turned over or erimped, as shown in Figs. 4 and 5, to clamp and secure the two ends of a wire rod or stem, K, which is made to surround a head or hammer, L,which head is preferably madeinthe form of a balLas shown, and grooved to receive the rod K. This rod K is bent around the head Land its ends inserted in the crimp or bend of the armatureplate and the latter forced down thereon, so that the two parts are firml y j oined together. The rear or pivotal end of the armature may be formed with ears 99,

perforated and adapted to receive a pivotal pin passing through ears formed upon the upwardly-projecting lug D upon the base A, to hold the armature in position in front of the electro-magnets F, and the hammer L in posiiion It strikes the bell or gong B.

The armature G is held in position away from the electro-maguets by a spring, M, one portion of which isinserted under and clamped by the crimped edges of the armature, and the free end of this spring is bent around and bears against an upwardly-projecting arm orlug, a, of the base A. Thatpart of the springM which is clamped in the armature-plate has atongue, m, stamped outof its central portion and bent outwardly to form a yielding contact. The contact bearing-arm His secured to the upwardlyprojecting lug D of the base by the bindingpost I, but is insulated from said lug D, as is the binding-post I, and carries at its outer end a contact-point, h, mounted uponascrew passing through the arm H and in the track of the contact m on the armature G, as it vibrates in front of the electro-magnets F. This arm H and the binding-post I are insulated from the supporting-arm D and from the armature-supports by means of insulating-washers.

in lieu of the pivotal connections G G and the retractingspring, as shown in Figs. 1 and 6, I may cause the spring to form the support for the armature, as shown in Fig. 7that is, by extending the spring backwardly and securing it by means of the binding-post to the lug D, and so forming it that it will act both as a support and a retracting-spring for the armatnres. The base or frame A is adapted to be secured in position against a wall by perforations a around which adownwardly-projecting flange or rim is formed, so that the base A, when secured to a wall, will be raised therefrom. The electrical circuit through the bell is through the binding-post E, to the electromagnet coils, to the base A, thence to the vicomposed of a soft-iron plate, G, crimped at [5 brating armature through its connection with its edges to clamp abifurtated hammer-bearing said base to the contact-point h, which, with arm K,andaretracting-spring,M,as described.

2. In an electromagnetic bell, an armature 5 the vibrating armature, forms the interrupter Signed at New York, in the county of New or circuit maker and breaker, and through the York and State of New York, this 14th day of arm H and the binding-post I to the line. November, A. D. 1887.

\Vhat I claim as my invention is 1. In an electric bell, a vibrating armature, ADAM LUNG EN.

10 substantially as herein described, consisting of an armature plate crimped at its edges to \Vitnesscs: clamp and secure a bifurcated arm, K, to carry V. I). EDWA nos, a hammer, L, and a retracting-spring, M. I

1). FRANKLIN B nRNs'rnI N. 

